<svg xmlns="http://www.w3.org/2000/svg" 
     xmlns:xlink="http://www.w3.org/1999/xlink"
     onload="boom();"
    class="reftest-wait">
     
<script>

function boom()
{
  var grad1 = document.getElementById("grad1");
  var grad2 = document.getElementById("grad2");

  grad1.appendChild(grad2);

  setTimeout(function() { 
    grad1.removeChild(grad2);
    document.documentElement.removeAttribute("class");
  }, 30);  
}

</script>

<linearGradient id="grad1" gradientUnits="objectBoundingBox" x1="0" y1="0" x2="1" y2="0">
  <stop id="green"   stop-color="#00dd00"   offset="0"/>
  <stop id="blue"    stop-color="#0000dd"   offset="1"/>
</linearGradient>

<linearGradient id="grad2" xlink:href="#grad1"/>

<rect x="20" y="20" width="440" height="80" fill="url(#grad2)" />

</svg>
